The flys are starting to come out, the pesky things that they are. I looked at tsc for some kind of spray to use for dairy cattle. They did have 1 kind, but the warning label did say it could cause death if inhaled or absorbed through the skin, to use overalls, gloves and a respirator when applying. And I'm supposed to spray this on my Jersey, and then actually drink the milk? Yea, right! So, seems like I might have read here about mixing vinegar and citonella oil for a spray. As bad as I hate the smell of citronella, I might give this a try, unless you wonderful people can come up with a better solution, please. But, concerning the citronella oil, where do you find that? Thanks for any help.